/* 内容区域样式 */

/* 公司介绍 */
.about-us {
    padding: 120px 0;
    background: linear-gradient(to bottom, #FFFFFF, #F9FAFB);
}

.about-content {
    display: flex;
    gap: 40px;
}

.about-sidebar {
    flex: 0 0 250px;
}

.sidebar-menu {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.sidebar-menu h3 {
    background: linear-gradient(135deg, #EF4444 0%, #F87171 100%);
    color: white;
    padding: 20px;
    font-size: 18px;
    margin: 0;
}

.sidebar-menu h3 i {
    margin-right: 10px;
}

.sidebar-menu ul {
    list-style: none;
}

.sidebar-menu li {
    border-bottom: 1px solid #eee;
}

.sidebar-menu li:last-child {
    border-bottom: none;
}

.sidebar-menu a {
    display: block;
    padding: 15px 20px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background: #F9FAFB;
    color: #EF4444;
    padding-left: 30px;
}

.sidebar-menu a i {
    margin-right: 10px;
    width: 16px;
}

.about-main {
    flex: 1;
}

.about-article {
    background: white;
    padding: 48px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.about-article h3 {
    font-size: 32px;
    color: #1F2937;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 3px solid #EF4444;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.article-content {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.article-image {
    flex: 0 0 300px;
    width: 300px;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
}

.article-text {
    flex: 1;
}

.article-text p {
    font-size: 14px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.read-more {
    margin-top: 20px;
}

.read-more a {
    color: #EF4444;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

.read-more a:hover {
    color: #DC2626;
}

/* 推荐资源 */
.news {
    padding: 80px 0;
    background: white;
}

.news h2 {
    text-align: center;
    font-size: 28px;
    color: #333;
    margin-bottom: 50px;
}

.news-content {
    display: flex;
    gap: 40px;
}

/* 新闻分类已删除 */

.news-list {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.news-item {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s;
}

.news-item:hover {
    background: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.news-item img {
    flex: 0 0 80px;
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 5px;
}

.news-info {
    flex: 1;
}

.news-info h4 {
    font-size: 14px;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-source {
    font-size: 12px;
    color: #EF4444;
    margin-bottom: 5px;
}

.news-date {
    font-size: 12px;
    color: #999;
}

/* 更多链接已删除 */

/* 合作展示区域 */
.cooperation {
    padding: 80px 0;
    background: #f8f9fa;
}

.cooperation-content {
    text-align: center;
    padding: 60px 40px;
}

.cooperation-content h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #333;
}

.cooperation-content p {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
}

.map-container {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.china-map {
    flex: 1;
    position: relative;
}

.china-map img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

.map-points {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.point {
    position: absolute;
    width: 12px;
    height: 12px;
    background: #e74c3c;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.point-beijing { top: 20%; left: 45%; }
.point-shanghai { top: 35%; left: 52%; }
.point-guangzhou { top: 65%; left: 45%; }
.point-shenzhen { top: 70%; left: 47%; }

.city-info {
    flex: 1;
}

.city-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    margin-bottom: 20px;
    opacity: 0.7;
    transition: all 0.3s;
}

.city-card.active {
    opacity: 1;
    transform: translateY(-2px);
}

.city-card h3 {
    color: #e74c3c;
    margin-bottom: 15px;
    font-size: 20px;
}

.city-details {
    color: #666;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .about-content {
        flex-direction: column;
    }
    
    .about-sidebar {
        flex: none;
    }
    
    .news-list {
        grid-template-columns: 1fr;
    }
    
    .map-container {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .article-content {
        flex-direction: column;
    }
    
    .article-image {
        flex: none;
        width: 100%;
    }
    
    .about-article {
        padding: 20px;
    }
    
    .news-content {
        flex-direction: column;
        gap: 20px;
    }
    
    .news-item {
        flex-direction: column;
        text-align: center;
    }
    
    .news-item img {
        flex: none;
        width: 100%;
        height: 120px;
    }
}